9,416 results found
    1. Medicine
    2. Neuroscience

    Changes in global and thalamic brain connectivity in LSD-induced altered states of consciousness are attributable to the 5-HT2A receptor

    Katrin H Preller et al.
    LSD induces a pattern of changed global brain connectivity characterized by hypo-connectivity in associative areas and hyper-connectivity across sensory and somatomotor areas that is dependent on the serotonin 2A receptor.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    3D in situ imaging of the female reproductive tract reveals molecular signatures of fertilizing spermatozoa in mice

    Lukas Ded et al.
    Fertilizing mouse spermatozoa, characterized by intact CatSper channels, lack of protein tyrosine phosphorylation, and reacted acrosomes, in the female reproductive tract provide molecular insight into sperm selection for successful fertilization.
    1. Biochemistry and Chemical Biology

    A discriminator code–based DTD surveillance ensures faithful glycine delivery for protein biosynthesis in bacteria

    Santosh Kumar Kuncha et al.
    Using bioinformatic and biochemical approaches, the study has explained the discriminator base anomaly in bacterial tRNA(Gly) through identification of the key determinant of DTD specificity.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanism of chiral proofreading during translation of the genetic code

    Sadeem Ahmad et al.
    Structural biology has elucidated the mechanism of a configuration-specific enzyme that decouples D-amino acids from the translational machinery and, therefore, is involved in the enforcement of homochirality during protein synthesis.
    1. Structural Biology and Molecular Biophysics

    ML277 specifically enhances the fully activated open state of KCNQ1 by modulating VSD-pore coupling

    Panpan Hou et al.
    ML277 exclusively enhances the AO state voltage-sensing domain (VSD)-pore coupling of KCNQ1 channels, providing an effective tool to investigate the voltge-dependent gating and new strategies for treating long QT syndrome.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    Measuring the distribution of fitness effects in somatic evolution by combining clonal dynamics with dN/dS ratios

    Marc J Williams et al.
    Measurement of the distribution of fitness effects of new mutations arising in human oesophagus and skin, via new mathematical theory linking dn/ds values and fitness coefficients.
    1. Cell Biology
    2. Computational and Systems Biology

    A synthetic planar cell polarity system reveals localized feedback on Fat4-Ds1 complexes

    Olga Loza et al.
    Localized feedback on Fa4-Ds1 boundary complexes underlies polarized distribution of Fat4 and Ds1 and gives rise to planar cell polarity.
    1. Cancer Biology

    Squamous trans-differentiation of pancreatic cancer cells promotes stromal inflammation

    Tim DD Somerville et al.
    A major consequence of ductal-to-squamous lineage transition in pancreatic cancer cells is to augment inflammation, which may explain the exceptionally poor clinical outcomes of squamous-subtype tumors.
    1. Genetics and Genomics

    A non-mosaic transchromosomic mouse model of Down syndrome carrying the long arm of human chromosome 21

    Yasuhiro Kazuki et al.
    TcMAC21 is an appropriate “next gen” mouse model for DS research, and provides a proof of concept of using artificial chromosomes to generate non-mosaic humanized animal models of chromosome disorders.
    1. Cancer Biology

    The origins and consequences of UPF1 variants in pancreatic adenosquamous carcinoma

    Jacob T Polaski et al.
    UPF1 mutations were reportedly present at high frequencies in a cohort of pancreatic adenosquamous carcinoma patients, but these lesions are unlikely to be functional drivers of this cancer subtype.

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